0
Composite Numbers
Composite Numbers are some special numbers which have more than 2 factors which consists of at least 1 prime factor.They are often referred as Non-prime Numbers.
4,066 Questions
Is 329 a prime or composite number?
It is a composite number: 329 = 7 x 47
329 is a composite number. Its factors are 1, 7, 47, and 329.
A prime number has only 2 factors which are 1 and itself. Composite numbers are everything else except 1 and 0. 1 and 0 are neither prime, nor composite. 329 is composite.
Is every number in the 90s a composite number?
Assume you want to know if every number between 1 and 90 is a composite number.
No, not every number between 1 and 90. Take 2 for instance. Then, 2 is prime since the factors of 2 are 1 and itself!
* * * * *
Assumed wrong!
In the 90s refers to 90-99, but the answer is correct, because 97 is a prime.
How many divisors does a composite number have?
At least one other than 1 and itself. It can have infinitely many.
It is composite. All even numbers except the number 2 are composite.
A prime number has only 2 factors which are 1 and itself. Composite numbers are everything else except 1 and 0. 1 and 0 are neither prime, nor composite. 342 is composite.
What is the perfect number between 25 and 30?
28. The sum of its factors (smaller than 28) is 1 + 2 + 4 + 7 + 14 = 28.
How is a prime different from a composite numder?
Prime numbers have two factors, composite numbers have more than two.
What are the difference between a composite number and a prime number?
A prime number has exactly two factors, 1 and the number itself. You should find no other factors of a prime number.
A composite number has *more* than two factors.
Examples of prime numbers:
2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31
Examples of composite numbers:
4, 6, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 22, 24, 25, 26, 27, 28, 30, 32, 33
Numbers that are neither prime nor composite:
0, 1
To test if a number is prime or not, try to find another number that divides it. For example, if I gave you 77... you should find that it is divisible by 7.
7 x 11 = 77
So 77 is not prime, it is COMPOSITE.
But if I gave you 37, you can't find any other number (besides 1 and 37), that will divide into it evenly.
So 37 is PRIME.
And remember that 0 and 1 are exceptions. They aren't considered prime or composite.
A prime number has only 2 factors which are 1 and itself. Composite numbers are everything else except 1 and 0. 1 and 0 are neither prime, nor composite. 499 is prime.
75.5 approx.
75.5 approx.
75.5 approx.
Is the number 14 prime composite or neither?
A prime number has only 2 factors which are 1 and itself. Composite numbers are everything else except 1 and 0. 1 and 0 are neither prime, nor composite. 14 is composite.
How many whole numbers are greater than 20 and less than 30 are composite?
There are 7 composite numbers greater than 20 and less than 30:
21, 22, 24, 25, 26, 27, 28
What is a composite number greater than 70?
For instance, all the even numbers greater than 70 are composite.The next few composite numbers greater than 70 are: 72, 74, 75, 76, 77, 78, 80, 81, 82, 84, 85, ...
Is 54 a prime number composite or neither?
54 is a composite number because it has more than 2 factors
What are all the prime numbers from 1-100?
A prime number is a number that is divisible by 2 positive integers - itself and one.
The prime numbers from 1-100 are:
2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97.
1 is not a prime number because 1 is divisible by one positive integer, 1.
0 is not a prime number because it is divisible by an infinite number of positive integers.
Also 1 and 0 are neither prime nor composite.
No, it isn't. Prime numbers cannot be divided by anything but 1 and the number itself. In another form, prime numbers have two factors - 1 and the number itself. The factors of 9 are: 3 (3x3), 9 (9x1), 1 (1x9) Therefore, since there is three as a factor besides 1 and the number itself, 9 is not prime. It's composite. No 9 is not prime. It's factors are 1,3,9. Proper factors: 1,3. Factors are numbers that are multiplied with other numbers to get a product. Proper factors are factors of a number except for itself. No 9 is not prime. It's factors are 1,3,9. Proper factors: 1,3. Factors are numbers that are multiplied with other numbers to get a product. Proper factors are factors of a number except for itself. Composite numbers are numbers with more than 2 factors and more than 1 proper factor. Prime is the opposite of composite. No, 9 is not a prime number. It is composite. (3 x 3 = 9, 1 x 9 = 9)
What are the composite numbers?
A composite number is a positive integer that has a positive divisor other than one or itself. In other words a composite number is any positive integer greater than one that is not a prime number.
A composite number is a number greater than 1 with more then 2 factors
11111 looks like a prime but it;s not. 41 * 271 = 11111. 11111 is a composite number.
1) A prime number should have exactly two distinct factors. The factors are 1 and
the number itself.
2) If n is a prime number, then, n should not be a factor of (n-1)!
Ex: 5 is a prime. 4!=24. 5 is not a factor of 24.
3) Any prime number greater than or equal to 3, can be expressed in a form of
6K+1 or 6k-1 ; where K=0,1,2,3,4,..................
A composite number is an integer having more than two factors that are whole numbers.
(Factors are two numbers that multiply together to give the number.) Some examples may help to get things in focus.
- 2 has only two factors (1, 2) so it is not a composite number, it is a prime number.
- 3 has only two factors (1, 3) so it is not a composite number, it is a prime number.
- 4 has three factors (1,2,4) so it is a composite number.
- 5 has only two factors (1,5) so it is not a composite number, it is a prime number.
- 6 has four factors (1,2,3,6) so it is a composite number.
Another description:
A composite number is an integer that is exactly divisible by at least one factor other than 1 and itself. There is an infinite number of composite numbers. It is not a prime number.
A prime number on the other hand has two distinct factors and can only be divided by 1 and itself.
It's easy enough to infer that a composite number can be written as a product of prime factors:
Example 2380 = 2 x 2 x 5 x 7 x 17
The Fundamental Theorem of Arithmetic states that any integer greater than 1 can be written as a unique product of prime numbers. This is a very important theory in math!
The first few composite numbers are: 4, 6, 8, 9, 10, 12, 14, 15, 16, 18, 20.
A number that is divisible.
Example: 145 is a composite number because you can divide it by 5 and other numbers.
Why are zero and one neither prime nor composite?
The definition of a prime number is a natural number that has exactly two distinct natural number divisors. And the definition of a composite number is a natural number that has more than two finite, distinct natural number divisors.
The number one has just one natural number divisor (1), thus it doesn't fit in either category. Zero has an infinite number of natural number divisors, thus it doesn't either.
But why is it important for 1 not to be a prime number? It's not just a matter of nitpicking. If 1 is not a prime number, then any composite number (such as 12) can be written as a product of primes in only one way (here, 2*2*3), not counting different orders. However, if 1 were a prime number, there would be infinitely many ways! We could write 12 for example, as 2*2*3, or 1*2*2*3, or 1*1*1*1*1*2*2*3. Having only one way to write a number as a product of primes is very useful when doing math.
The Unique-Prime-Factorization Theorem is so useful, that it is also called the Fundamental Theorem of Arithmetic.
